I would look into getting a Stage 1 or 2 Spec Star clutch. I got a Stage 2 in my LS1 and it works great. Feels like stock and I have yet to hear any chatter. The only noise I get from it is sitting in neutral with the clutch let out you can hear the disk skipping off of the flywheel and that aint shit for the holding power that it provides. Also Spec clutches come with a flywheel so thats a plus and they are worth the money. Heres a link.

http://www.ls1speed.com/catagory.cfm?catagory=trans